ИСТИНА

Colloidal quasi-2D nanoplatelets have been attracted considerable interest due to strong quantum confinement effects and electronic properties which are similar to those of epitaxial quantum wells. Next step, heterojunction formation, allows to tune the electronic levels, and thus optical properties of semiconductor nanoplatelets using band engineering. To the best of our knowledge, the synthetic approaches for a formation of quasi-two-dimensional heterostructures as well as their properties were not well documented yet. In present work, CdSe and CdTe nanoplatelets and ultrathin CdSe/CdS and CdTe/CdS heterostructures based on them were prepared by the colloidal method. Sizes, morphology, crystal structure and optical properties were analyzed.